From then on, Pauling protested the production of the hydrogen bombs and supported the prevention of the spread of nuclear weapons. Through his efforts, The Nuclear-Test-Ban Treaty, declaring all nuclear tests to be illegal except underground ones, came into effect on October 10, 1963, the same day Linus Pauling was awarded the Nobel Prize for Peace.

　　【文章大意】本文主要介绍了Linus Pauling一生的成就及其对世界所做出的杰出贡献。他是唯一一位两度独立获诺贝尔奖的科学家。

　　1. From the first paragraph, we learn that Linus Pauling　.

　　A. didn’t study hard while in Washington High School

　　B. is the only scientist who has won two Nobel Prizes

　　C. was once badly treated in Washington High School

　　D. chose to study chemical engineering to earn his living

　　【解析】选D。细节理解题。从第一段最后一句话“He had chosen to study his major because he could get a good job with it. ”可以得出正确答案为D选项。

　　2. Which of the following things did Pauling pay much attention to at first?

　　A. The“behavior”of molecules.

　　B. Physical chemistry.

　　C. Biological chemistry.

　　D. The human body.

　　【解析】选B。推理判断题。从第二段第二句话“His interest in the‘behavior’of molecules led him from physical chemistry to biological chemistry, especially of the human body. ”我们可以看出, Pauling的兴趣发生了变化, 从physical chemistry转到了biological chemistry上, 所以正确答案为B选项。

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